Nish, Adrian and Hwang, Jeong-Yuan and Doig, James and Nicholas, Robin J. (2007) Highly selective dispersion of singlewalled carbon nanotubes using aromatic polymers. NATURE NANOTECHNOLOGY, 2 (10). pp. 640-646.
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Official URL: http://www.nature.com/nnano/journal/v2/n10/abs/nna...
Solubilizing and purifying carbon nanotubes remains one of the foremost technological hurdles in their investigation and application. We report a dramatic improvement in the preparation of single-walled carbon nanotube solutions based on the ability of specific aromatic polymers to efficiently disperse certain nanotube species with a high degree of selectivity. Evidence of this is provided by optical absorbance and photoluminescence excitation spectra, which show suspensions corresponding to up to similar to 60% relative concentration of a single species of isolated nanotubes with fluorescence quantum yields of up to 1.5%. Different polymers show the ability to discriminate between nanotube species in terms of either diameter or chiral angle. Modelling suggests that rigid-backbone polymers form ordered molecular structures surrounding the nanotubes with n-fold symmetry determined by the tube diameter.
|Subjects:||Material Science > Nanofabrication processes and tools|
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Deposited By:||Anuj Seth|
|Deposited On:||13 Jan 2009 14:55|
|Last Modified:||20 Jan 2009 15:23|
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